Polo bike geometry + addons

I have 2 choices for the fork right now:
echo
-aluminium trial echo urban 26, v-brake and disc
-780gr
-400mm a-c 30mm offset
120$

Spez
-Steel Pfix v-brake
-around 1 kg i assume
-417mm a-c 31mm offset
60$

I'm using echo urbans. Apparently only the 2012 model is 30mm rake.
they're a bit flexy under breaking and look like cannondale fattys.