Try to place Auras so the buff beam catches them both. Build goes under the bridge, or as close as you can get.
Wave1: Build Auras, Buff Beam, Reflect and as many owl nests as you can. Use TB to drop mana and build the rest in wave. You should also max upgrade the beam.
Wave 2+: Upgrade everything and TB
Final Wave: Bring in heroes for the drops you want. I usually run 3 Hermits and my TB but the choice is upto you. Hide splits under the bridge and be sure to cut TB a little early so he can boost as soon as Cupids spawn.Eye pets help but are not neccessary.
Stats are just what I use, I imagine it can be done way lower but I have not tested.