Wtd- 8 speed bits , v brakes, pedals for tandem project

[iLB]

Looking for some bits to go on project tandem:

8 speed:
-shifters
-rear mech
-triple front mech (less urgent)

Would consider buying groupset or mini groupset if someone has something.

Brakes:
-shimano deore or similar (F+R)

Pedals:

-m520, flats, double sided all considered.

Cheers!