Hi Sajha Lawyers,Experts

Being fed up with my so-called lier  dhoti employer who has threatened to cancel my H1B(started this Oct...no job,...no paystubs..) at the end of this month,I have decided to leave this country next month with the possibility of coming back with F1 visa.So,my question is what would be the impact on my future arrival back to US,if I left this so-called  filthy company without notice?What happens if I stay here for couples of days,say 15/16 days beyond my termination day especially for arranging my travel to Nepal,for example getting tickets,termation of apartments,selling cars or so?Would my unintensional overstay affect adversely on my future travel for study or immigration? Do I get few days to arrange my travel back to Nepal without penaly or violation of immigration law?

I have hope of getting accepted in Ph.D.program for this Spring (2009).I am planning to get I-20,go to Nepal,and come back.

Any info/suggestion will be highly appreciated.