>>14851705I don't think Roost will be terribly useful for it considering his low bulk. Flying Gem + Acrobatics is a good way to lower the residual damage it takes especially considering how weak it is to rocks, and there will be times you will have no choice but to switch him into them.
Another fun choice is Focus Sash which boosts Acrobatics and allows you to get a free Swords Dance. Also makes Flail a decent option that hits harder than STAB Acrobatics but sadly it doesn't help much with its poor coverage. Could also run Substitute+Liechi+Acrobatics if you don't want stealth rocks to completely ruin the strategy. If you give it 4 HP IVs then two switches into Stealth Rocks also brings it directly to 1 HP allowing you to eat a berry.
Shame it doesn't have a better special movepool since I'd like to run a mixed set just letting its priority+base speed fill in for the lost speed EVs.