what kind of wood for the body of the guitar,the neck,fretboard would be best
suited for arpeggios,solos and a little bit of metalcore and melodeth???
Mahogany could be used? but i would suggest for a brighter more cutting sound and Alder body and maple neck. And of course high output pickups of your choice.

fretboard wood is really down to personal preference anyway, it has a fairly small influence (if any) on tone, mainly aesthetics.

also most shreddy guitars seem to have a basswood body as it allows the tone to be mainly shaped by the sound of the pickups

Wilkinson EZ lok Tuners - £15
Dunlop 535q Multiwah - £80

Offers/Trades anyone?
I'd go with Mahogany body, maybe Maple capped, and Maple neck for a bit more bright. Otherwise Basswood or Alder plain body.
I pick up my guitar and play
Just like Yesterday

T C Ellis Series 2 LP w/Skatterbrane Quiescence pups
Cort EVL-K6
Yamaha RGX211 modded
H&S Electric 12-string
Shaftsbury Ricki 4001
'84 Fender Yale
Roland Cube 15x