security deposit in installments

[Edith Yuh]

I am moving and renting out my condo ($2700/month) in the San Francisco Bay Area. A prospective applicant asked me prior to viewing the property whether they can pay their security deposit (1.5 rent) in 4 installments because they are just moving from Florida due to visa requirements, and aren't prepared for the high housing costs in the San Francisco Bay Area. I am collecting the 1st month rent at lease signing but they can't afford the security deposit and last month rent (which would have been ideal, but also a lot of money for someone who hasn't been making Bay Area salaries). Should I let them pay in installments? (I haven't sent them an application yet, because not sure whether I should decide this prior to giving them the application, or whether this answer depends on their credit/background check).

First time landlord here, so all related and mildly related advice based on your experience are welcome. Thanks in advance!