More lfet questions

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I have seen schematics where 2 pairs are run off an mje350 as well as ones w complementary 350 and 340 or I'm pretty sure you can you two of the same if implemented correctly. With complementary pairs given a solid vas how many of the 125watt lfets can I drive? What about the 250 watt lfets? I would like to build an input vas and driver that uses the same lay out for up to 4 pairs of the 250w at 97/+- What is the max output I can get w these as drivers. Suppose i am using a 47uf cap on the gate and rail, 360 ohm gate stopper and .1 source. Can some one point me to the math where I can read about what current needs to be to run for the vas transistors to be all in class A and then ab output transistor of this design? Can
Mje do it if not what is the max as I have a lot already matched. Should I switch to irf9610 as the 2 drivers and the use mjes and bc559 and 560 in the vas after a mp42sa lpt? Of course resistors and caps come into play but making sure I have all the correct components as ordered by over 100 pack or more for some and while I can use them in another design this is my current focus.
 
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