Abathur P1 build order

I am thinking of using Abathur P1 swarm hosts (or perhaps ravagers) for this week's mutation. Does anyone have any good build orders to optimise getting out as many swarm hosts/ravagers as quickly as possible? Without UEs I feel that getting the timing of the early game right will be important, because I won't be able to rely on brutalisks to carry the early game. I appreciate that microtransactions will probably ruin any tight build order timings, but I'm just looking for a build to aim for.

As a secondary question, is it still worthwhile luring enemies into toxic nests using spore crawlers with P1?

And finally, what mastery sets do you use for P1? (apart from the obvious double biomass chance of course)