Koni shocks and Eibach pro kit springs are the go-to combo for these cars if you don't want coilovers.
Sadly bushings there are limited options these days. TRD bushes are no longer available and even Cusco bushes aren't easily obtainable and not much better than stock unless you go with their bone jarring pillowball bushes (not street friendly at all).
Toyota Genuine don't make all bushings replaceable, they prefer you buy the whole control arm etc.
Prothane bushes are the cheapest and easiest option, they are noticeably firmer than stock but as long as you lube them up properly, they work great.
Dropping the engine isn't so hard on these once you know what needs to be unplugged etc.
Timing belt, tensioner, water pump, cam seals, valve cover gaskets, front and rear mains and crank keyway are pretty much the bare minimum. If you have any slight sign of a sump leak though I recommend taking that off and resealing it and doing the oil pump gasket at the same time too.