Nothing wrong with that. My grandfather was very successful in selling them and have a friend on the West Coast who was involved in the industry too. Before committing, I'd do a cost-benefit analysis (OK, econ nerdiness shining through) of getting a mobile home (land, hookup, moving it, fees, insurability, etc.) assuming you had perfect credit now and then comparing that to buying a home assuming you had perfect credit too. If a home is a better option, and the only thing holding you back was credit, then you have to weigh the time frame for better credit vs. waiting for that home. Make sense? I probably lost you. 
In other words, is the benefit for waiting for a home and leasing an apartment now greater than the benefit of buying a mobile home now and not waiting? Rhetorically asked.
Having lived in a mobile home park many years ago I can say for certain there is no amount of money that would ever make me go back. I would rather rent. 
If you have not experienced it you are in for a shock. If you have and you are okay with it, then you know what is best for you. Just my $0.02.
I have to totally agree with Middleswarth!! Living in a Trailer Park (each park is different so I wish you luck) was the worst decision I ever made for my children. To OP I totally understand your situation that is almost exactly how I ended up in a TP. Thankfully only paid $4000 for the trailer, so it was easy to get out of when my financial situation improved!
Anyway back on topic! I was recently in your situation many CA accounts, CO, and many late payments with no open revolving accounts! My credit score was stagnant for almost a year until I finally decided to apply for a secured card through Capital One, Credit score at the time was 520 ouch!! It lowered my score about 5 points initially for thre inquiry! 2 months later they finally reported and boosted my score 24 points! After 6 months of charging a minimal amount and paying in full the raised my credit limit! I took a chance and applied for an unsecured No Hassles card and got approved. 2 pt ding because of the inquiry but when that one reported 2 months later I got a 30 point score increase!!! Just my experience! Good luck to you!
Starting Score: 8/30/11 EQ 520 TU98 593
@Middleswarth wrote:Having lived in a mobile home park many years ago I can say for certain there is no amount of money that would ever make me go back. I would rather rent.
If you have not experienced it you are in for a shock. If you have and you are okay with it, then you know what is best for you. Just my $0.02.
What were the bad experiences in reguard to?
We live in a pretty yuppy suburban area- and the trailer park is very very well maintained- has strict rules on how new the trailers can be as well as how things can look outside. A majority of the residents are older- but there are also lots of families with kids. Many of them go to school with my kids- and honestly I was shocked when I found out where they lived. LOL We have spent a really long time debating this decision- and just any ol trailer park wasn't going to do- but the one in our area fits our standards and criteria and we know several people living there- who are not trailer trash by any means- and they think the place is great and have no problems.
On 07/12/11 I got a pull @ MyFico.com: TU - 652 / EQ - 613 / EX - ???. I then applied for a capital one rewards card which I got with a credit line of only $300. I charged a few things on the card and left the balance at $5 and did the same thing the next two months. When I got my most recent pull @ myFico.com on 10/10/11 my scores changed to: TU - 679 / EQ - 632 / EX - ???. I never noticed a dip in scores as I only do the quarterly monitoring so I get a new pull every 3 months. As you can clearly see, my scores went up as a result of the new credit line despite it being so low. You might find the same result is true for you as well. GL in whatever you do!
