You're right: Anyone can get you pre-approved with a letter of intent, but you won't be able to CLOSE until you can show a pay stub.
The key piece of information you left out of your question is the amount of your summer stipend. Although it may be significantly lower than your starting salary, it MIGHT be enough to get you qualified for the condo you desire.
It's worth a shot, and it costs you nothing to find out.
Give me a call or shoot me an email.
Senior Mortgage Consultant
President, A&N Mortgage
Lease to own options are rarely available here in Chicago, but you do see them pop up occasionally.
Senior VP of Mortgage lending
Baird & Warner
773 677 5340
If it turns out that you need to rent I can help with that also.
Most loan qualifications require a 2 year employment history at current salary or slightly increasing.
The other option, is your Law Firm. they may have options for home ownerships of new members