Growing in raised beds

Courgettes spread to about 1m square each, so don't plan on planting anything much closer than 4' away from the courgette in any direction.

Peppers I would probably stick to pots, though I'm no expert in them particularly.

I grow courgettes under my munty frame in a raised bed.  Sure it gets a bit crowded (and I probably therefore dont get as big a harvest as some), but it does me fine 

Plenty feed and regular watering and youcant go wrong.

Not sure about peppers.  I personally put mine in pots - anything that does ok in a pot goes in one to save precious space for the rest.  OUr chillies thrive in relatively small pots.

It's not cheap here either, but you don't need a great deal per plant, just a good pinch right at the roots. I never used to think this sort of thing was good but I've used it for the last 3 years and have found a big difference in my crops. I always use it with peppers, toms, beans and peas and can tell which plants I forgot to add it. It's totally organic as well so no problems there.

Thanks for all the advice, I think I will keep to pots and as you say, use the space for something else