Your loop needs a T-line or reservoir, but not both. If you don't want a T-line, then you don't have to install it, and same thing for a reservoir. However, you do need a way to refill the loop and bleed out air.
A chipset waterblock is optional and will have little effect on performance. Most motherboards that support OCing should already have sufficient chipset heatsinks.
Also, just a tip. Expect a water cooling system to go over-budget.