Your scores are going to take some serious hits for awhile. The new TLs if you have a thin file will bring down your AAoA significantly, which will impact your credit score. In the longrun as the new TLs age and the Inqs weaken your score will begin to recover, assuming you manage the cards properly. Down the line your score will probably increase, but it will take several months to a year to fully recover.
My AAoA is around 9yrs but this is my first time going on an app spree. I just purchased a new home last week so with the new TLs I plan on gardening for a while.
Of topic but did you recon Discover?
I did multiple times and shot down every time, may try once more once I receive my letter.