My 2 cents - you sound like you have enough mats to get a serious power source, biomass engines/ generators suck all kind of balls as a permanent energy solution imo, biomass engines yuk, build a still and use combustion engines. Bio/ semi fluid generators? YUK, MJ into magma crucible and use the lava for power
So many different options - I have my preferences and my current setup tends to be in stages and in 3 starts I have done it 3 different ways
Step 1 (setting up and powering 32 eu on demand) - burn wood to get up and running (easier to plant a bunch of spruces near base and harvest/replant on demand)
Step 2 - couple of geothermals powered by aluminum cans of lava - take a stack mining and pick up a load of lava
But I reckon you can skip these
Lava route - pump lava up from bottom of the map - depends on proximity to lava and where you are building wise, build a monster tank and fill it - power 6-8 thermal generators and profit.
upgrade using chunk loaders and lava pumps/ ender tanks in the nether and you are golden... I stopped using it as it felt a bit like cheating to endertank nether lava. NOTE the tank acts as a buffer so when it starts emptying you have time to move your pump
Biomass/ charcoal route - steves carts tree farm 16x16 (E shape) with oak - this is so OP we have banned it from out new server. my 16 x 16 farm cost a few diamonds and produces enough wood that it powers the cart and 2 x 36HP solid boilers via charcoal. Build 2 fermenters and 6 stills and you can power another 2 36 HP liquid Boilers, build a small wheatfarm and autocraft compost and you can negate the need for any input (fertiliser) or maintenance for the system at all! I like systems that run forever and dispair at the new multifarms and their apitite requirement
Just fyi - this produces 720 steam or 350 eu/t or 144MJ/t per boiler via an energy bridge. 1 Steves cart farm with the right setup for 1400eu/t day and night - yes please... technically you could MJ to magma crucibles and make obsene amounts of lava for even more EU but its a bit greeds
On Demand route - new server, new rules, low tech. So I am farming trees and using hobby engines/ combustion engines and a small manual tree farm and a logger. build up a stock of fuel and charcoal then when I need power I flick a switch and get MJ from the engines or lava from a crucible to generators for EU.
remember boilers are only awesome if they are on 24hrs a day - so unless you have a UU fab you should use engines and switch on when you need it!
good luck