That team is probably the best you can make right now. If you want dmg, you can go Iruka, Gaara and Minato with the wind main, but obviously Kurenai is much more useful in most scenarios for PvP.

Another nice team you could use is the current one you have, but replacing Gaara with Pakura [Edo Tensei], that way you’d get insane healing with double standards from Minato [Fourth Hokage] proccing the passive a guaranteed twice every round for insane dmg output.

Ninjas you might want to save up are like Konan [Angel of God] (although you kinda need Kisame [Samehada Fusion Mode] to fully utilise her you can still go with Gaara and Minato until you get him), Deidara [Edo Tensei] (Also works well with Kisame and/or Angel Konan but can be used with Sasori [Edo Tensei] and Jinpachi [Edo Tensei] with the Earth Main, Madara [5 Kage Summit] (works well with Itachi [Anbu] and Minato (both jonin and hokage are good although the bond version of Jonin is probably a bit better), Shisui [Kotoatsukami] (Nice ninja to pair with Minato [Fourth Hokage] although is easily countered by Madara [5 Kage Summit] teams but should be really good for other pvp fights, works well with Kurenai (preferably fully skill broken or at least with mystery and/or chase) and Itachii [Anbu] on the fire main and c*so be paired with Minato [Fourth Hokage] for a strong PvP lineup with Kurenai).

Probably the easiest to get would be Shisui just cos of the price (he costs around 12-14k ish if iirc) and that you wouldn’t need to get any extra ninjas.