Why are you going nuts? 1000 of people cry to change their status from f1- h1 and you want to do the other, this is hilarious! I understand that you want to do your masters... If you have plenty of money to back you up then yeah change it to f1.. BUt if you are good old "i'm by my own" type then join the masters when you are in H1 visa.. you would be eligible to pay instate as you have filed taxes as a resident.. and further more your employer can pay for your tuition too.. take evening classes or online or whatso ever .. .either ways its your choice do what you want to best of luck..