Raised bed question

[angler]

I have a quick question, I am building a raisedbed of approx. 20 cubic feet,Iam filling it with a mixture of 1/4 peat,1/4 jungle growth professional mix,1/4 mushroom compost and 1/4 black kow manure. My question is , how much garden lime should I add and is there anything else that I should add to the mix. I will be putting a couple of tomato plants ,a couple of eggplant, some pickling cucumbers and maybe a some kind of pepper plant.

Thanks for any input
Craig