Hey guys,

I am selling my house to get money to invest in new home construction to flip when it is buit, #1 I want to buy 4 or 5 at a time , how do I get them financed , #2 do I need to start an llc, I am thinking I am going to put earnest money down on these houses and find a different individual to co-sign on each house, any advice?

You not have to start an LLC. Your builder if experienced can be qualified. He has to prove license
The kind of loan you look for when you want to construct and sell a home is called spec loan.
If you find buyers interested in the homes prior to construction. This is called presales.
The kind of financing you seek at this time is construction to permanent.