Hey peaches20,

I dont know anything about coffee plants, but there are no genetically dwarf citrus trees. The "dwarf" factor is due to one citrus being grafted onto another citrus root stock. And even then, having a dwarf tree doesnt mean it wont grow to normal size, it just means that it will take considerably longer to rech that size. But if you will be growing these indoors, since i see you are in zone 6, they might stay at a small-ish size. Having said that, i have some mandarin orange tree seeds that i can save for you. My dwarf (grafted) tree is fully loaded with fruit right now. I will also have some mexican sweet lime seeds (also known as key lime) in a couple of weeks.

Notice the graft union about half ways up the trunk. This is what is classified as a dwarf citrus tree. It will EVENTUALLY grow to the size of a normal, ungrafted tree, but that will take many, many years.
{{gwi:105949}}

Dear central_cali369,

I sent you an email but I'm not sure if you received it.
I would most definitely be interested in your orange and key lime seeds. Nice photo.

Please check out my page to see if there is anything you want.

Thanks,

Peaches