Build suggestions for 340?

Hi Folks! I pulled my '69 340 last weekend; it was previously built in about '89.

I'm looking for suggestions! Here are the basics...
I want to use the stock block, crank, rods, and heads. (I have 'J' heads with 2.02 valves.) I have an old LD-340 intake I want to use. (I do have a splash shield that fits in the valley under the intake.) I do have the MP windage tray, and the MP bigger oil pump. (I also have the high pressure spring...not sure if I should keep that.)

I have a holley 650 vacuum secondary, that runs well on the current engine. Long term I might want to go with a TBI system, like FiTech, Sniper, etc. Long-tube Hooker headers.

The engine is going in a '64 Barracuda with a 4-speed, and an 8 3/4 rear with 3.23 limited slip.

It will be mainly a street car, as I like driving it! I will probably take it to a track once in a while, but that's not a primary goal.

There are a LOT of cam options out there! I'll probably stick with a flat hydraulic cam, and will keep the stock rockers if I can.

I figure about 10:1 compression - does that sound do-able?

I'd like to get to about 400 HP and a little more torque, but I DO want a broad torque curve.

The pic is a 'before' pic.
20200718_200549 (Large).jpg
Thanks for any advice!