update:

got my actuator but i need a new esc since the one i got didnt work, but it was free

im doing the whole thing now in 10mm hdpe and i might come a little under weight but if i do i can always beef up the claws or just add some extras in

although i do need another £140 for the batteries and extra ones needed, esc and armor and thats not even including the stuff for the claws, chargers and all the other little bits i need to buy (DAM I NEED A JOB!), its going to be a long one to buy and build but with my birthday in July, im aiming for the competition in Kidderminster in october so i should have plenty of time to get it built and i have the summer in the middle of that so more than enough time