Hello, I am new here and although I have been reading some of the posts I need some advice on a tree I recently purchased.

I got a satsuma tree that is about 4 years old bare root in the mail. The roots had no soil and they were wrapped in plastic when I got it. I planted it in a 15 gal plastic pot with many draining holes using miracle gro cactus, citrus and palm soil. It has been about 2 weeks and although the tree looks good, I am not happy with the soil at all. It rained here all day yesterday and the soil is not draining that well, if I grab a handfull of it I can squeeze the water out of it like a sponge. I want to get a better potting soil that my local nursery sells here which is mostly perlite and wood shavings with very little soil in it.

My question is. Can I change the soil of the pot now since it's only been 2 weeks since I planted it for the first time or should I wait? If I wait will the tree make it in that soil that it's in and if so how long can it stay in it with no danger?

I really don't want my tree to die and I am very concerned.

Thanks.