How to split a circuit
Yeah, that's fine.  Plan your breakpoint carefully based on the loads you expect.  

For instance I like to break circuits mid-room, so BR1 has half of circuit 1 and half of circuit 2, and BR2 has half of circuit 2 and half of circuit 3 etc.  That way if you make one the computer room, and need to plug in both a gaming PC and laser printer, you can put some on each circuit.   

Make darn sure you're not making a loop.  Check that by sticking a load in every outlet, and go through each breaker, turning it off while the others are on.  Make sure every outlet turns off with exactly one breaker.