While the addtional student loans will not particularly 'help' your score, you should still be able to maintain a good score while this debt accumulates as long as: 1) the loans are either in a 'deferred' status or are being paid on time, 2) all other accounts are paid on time, 3)credit card balances remain low, and 4) you avoid any unnecessary account openings.
While the scoring formula does look at deferred student loan balances to some degree, their negative effect will only be very minimal since installment type debt (mortgage, auto, student loan) is looked at much less critically than revolving (credit card).