Hi I'm new to tyranids I have:

20x Termagants w fleshborers 10x Termagants w devourers 20x hormagaunts 20x Genestealers 1x barbagaunts box 1x biovores box 1x old one eye 1x unbuilt carnifex sprue 1x winged tyranid prime 1x exocrine 1x broodlord 3x von ryans leapers 2x psychophage 1x unbuilt venomtropes/zoantropes box

Any tips on how to start the army with 1000p and improvements to get to 2000p.

Thanks in advance.