Expanding the collection to include onc's and catt's?

[Bill U.]

Hi everyone,

This is more of a question-related post for those who have grown these orchids, or orchids that are similar.

I have been looking to expand my collection from some phals and a phrag to include the oncidiums and cattleyas. However, I am somewhat limited in my growing space and with the specialized care that I can give (in terms of very finicky temperatures, etc).

I have been looking at the following orchids from Norman's Orchids (orchids.com):

Lc. Purple Cascade 'Fragrance Princess' (C. Interglossa x Lc. Tokyo Magic)

Pot. (Rth.) Duh's Passion (Pot. Duh's Sweet x Pot. Love Passion)

Onc. Green Valley Sweet 'Heavenly' AM/ AOS (Onc. John Louis Shirah x Onc. Auntie Baby)

Bllra. 'Smile Eri' (Bllra. Tahoma Glacier x Oda. Toroma x Oda. Ingera)

Basically I have a few basic questions about all of these orchids:

1) How many blooms can I expect per year? (1/yr, 2/yr, etc)
2) Do they need a cold chill to induce blooming? If yes, what kind of chill would they need?
3) Rough height/size (including inflorescence)?
4) Good for a beginner to the genus?

If anyone could give any insight into any of these guys, I would greatly appreciate it! Also, if you would suggest one of them over the other, please let me know that too!

I am growing on a windowsill (big windowsill) that is supplemented with grow lights and light requirements are not an issue as I will be more than happy to supplement with additional lighting as needed