2 packs the way to go!!!
2 pack etch,2pack high build then 2pack top coat,if youre doing it base and clear i can still get solvent base coat matched to whatever colour you want,or i can get you water based.
You could do it in old fashioned celly but...well it sharnt be as good,and is more likely to fade over time and can bloom a little if the airs a little damp when applied.
If you need some prices let me know and i will get you some.
Kind regards
Richie