My first bellina- is a 3" leafspan big enough?

[astrid]

Hey everyone!

I am looking to buy a phalaenopsis bellina from mid-pacific orchids due to their fabulous prices –*and the fact that big leaf orchids just sold out of all their affordable bellinas!!!
Phal. bellina x self 2" pot 3" leafspan

Anyway, it says the orchid is in a 2" pot with a 3" leafspan.

As this is a species, I just want to know- would this be challenging to grow from that size? I have heard they become relatively easy after they get a 5" leafspan.

My conditions are as follows:
Average yearly humidity: 40-60%
Seasons: cloudy dark winters, endlessly blue sunny skies in summer
Summer temps: from 80 to 100°F
winter temps: keep my house about 70°F
no grow light
I usually run a fan near my orchids

I can offer the 10°F temp change between daytime and night time to get the plant to bloom.

What is your advice? I really want to snap one of these up sometime this summer!