hi bud i run a monty 221ti with 180 discs front and rear and they are awesome 205 isnt really needed and it will be easyer to hit a 205. go for the 185
go for something like the zhi zm2. to be honest there isnt much difference in weight in frames it tends to be the components mostly.anyway the zhi is strong, reasonably priced, and light weight steve http://www.tartybikes.co.uk/product.php?id=2046