AA Taking A Non-Standard Line OOP: Donkish?

I’ve realised the importance of balancing my game recently and been trying to work on taking some non-standard lines with strong hands. In particular I’m trying to balance the times I’m raising in EP and having the check/fold because I get a few LP callers and whiff the flop. Both players in this hand are regulars, MP2 is a 8/6 set miner type and the CO is a 20/11/3.5.

Poker Stars, $0.50/$1 NL Hold’em Cash Game, 9 Players
LeggoPoker.com – Hand History Converter

Hero (UTG+1): $105.05
UTG+2: $86.45
MP1: $100
MP2: $143.10
CO: $165.30
BTN: $101
SB: $70.90
BB: $265.20
UTG: $77.90

Pre-Flop: A A dealt to Hero (UTG+1)
UTG folds, Hero raises to $4, 2 folds, MP2 calls $4, CO calls $4, 3 folds

Flop: ($13.50) 3 8 6 (3 Players)
Hero checks, MP2 checks, CO bets $10, Hero calls $10, MP2 folds

This is a flop I could well give up on facing two opponents out of position with a hand like AK/AQ. I know the CO will probably fire if checked to, and that MP2 is unlikely to show any aggression without a set. When he does bet I think about c/r, but decide the board is so dry that I’m most likely way ahead so I might as well try and trap him for another bet on a later street. Would c/r have been a better idea?

Turn: ($33.50) 5 (2 Players)
Hero checks, CO checks

River: ($33.50) 6 (2 Players)
Hero checks, CO bets $30, Hero ?

I decide that leading out the river leads to the villain folding a lot of hands he might otherwise value bet and also takes away his chance to bluff. Should I just call or is there value in shoving given our weird line so far?