I guess it depends how much cash you have?
I hunt thargoids in an FGS, twin fighter bay (to occupy the swarm), two guass cannons, one large ax missile luncher and an ax multicannon. I am currently trying to upgrade the missile launcher to a guardian plazma, not sure if its gunna work, power is a problem!
Stack as many hrp/mrp as you can fit.
I can now take out a cyclops (even pretty damn drunk), but a bassilisk is beyond my skill level atm.
Its hard (i aint the best combat pilot) but go john rambo, survive, adapt, overcome!
Good luck commander
Btw the anti xeno initiative have an excellent thread with many builds and advice. Just try not to swoon at how sexy gluttony fang is