For the LT/DST stack build DST spam LT's for your remaining mana
Keep your app in first wave to gather mana (either Baby Old One or drop mana from a booster) to finish LT stack
Rest of the waves:
Upgrade the shit out of your towers
Use IB if ya want, might make things a bit easier and or faster.
Sometimes a snot ball hits your reflector walls, so watch out for them! This happens infrequently but I usually put my boosters in the middle (right ontop of the LTs stack)
At somepoint a snotball will hit your ogre/orc/spider minions so just watch their hp from time to time if your summoner is not Tower HP spec.
Don't need high minion HP just need to have some :)
Boss wave:
I run DPS huntress to spam dark shot and hawk shot, dark shot amplifies the dmg on the boss, which includes the dmg done by the towers.
Boss will get stuck on your minions and die to your morter towers
Watch your minions HP, sometimes they die but should not be a problem if 1 or two goes down boss should aggro to another one.
I run TB on split 2 and fill the rest with huntress/rangers
Notes:
Place the spider queen a bit behind the ogres and orc as described in the hint 3.
Can probably speed it up by removing ensares, but might make the build unstable.
The stats posted are what I currently run this build with, can possibly be done with lower stats but I'd say anything > 7k main stats (minus summoner) with decent sides should be fine.