can I take 4 months of rent as advance(in Arizona State)

[Ashley Chris]

As I am screening applicants, one of the applicants has low credit score (500+), no bankruptcies, no evictions but has late payments.

a) Tenant is willing to put down 1.5 month security deposit (state allowed maximum) and 4 months of rent in advance. Is it legal to take 4 months of rent in advance? If so, what are the ramifications

b)How to deal with tenants who has low credit score (but all other qualities look good)