Raised bed/Compost pile-too much pee? ...And other strange questions

Sorry if this is the wrong place to post this...

I have a raised bed I want to plant an Asian pear tree in after last frost. It is filled with half composted organic material, and I have been peeing on it a lot.
My wife, who is not a gardener , but does have her mothers Appalachian green thumb, thinks I may be over doing it.
As things warm up, I plan on topping out the pile with top soil and aged manure,planting, and continue to add urine and veggie scraps down the worm towers I have put in place.
Red wigglers will also be added.
Recent reading has made me think that all this nitrogen will encourage plant growth but discourage fruiting.
So, too much pee/nitrogen for a fruit tree? And if so, what should I plant instead?
BTW, this is a shaded spot, but I have another (Bartlett) pear doing well nearby, so wasn't too worried about sun...
If the nitrogen isn't going to be a problem, what should I plant underneath the new pear tree?

You'll probably be fine, provided you don't have a really high-salt diet. If you do have problems, water it heavily for a day or so.

As for plants around the tree... onions, garlic, comfrey, wormwood, sage and other aromatic/useful plants are good for discouraging pests. I plant nitrogen fixers around my trees, too, but with all that urine that may be overkill. Mustards are good for keeping nematode issues under control - and any bee attracting flower is a good idea, too.

Thanks for your reply!
I haven't the scratch for the trees I want right now, so I am concentrating on my soil and guilds now. I picked up some raspberry canes for free, would they do any harm under an established(3rd year) Bartlett pear?
How about clover? Black eyed peas? Sunchokes? Chickpeas?
There are already plants in place,perhaps I should id these first?