Crystal Shores was designed a bit more upscale, and priced a lot higher, than the Orlando properties. I don't know their resale market, but I'm sure the price differential is somewhat attenuated. That said- are you looking for that type of resort and that location vs Orlando? If you want a more upscale Orlando property, although not as convenient to the parks, you might want to consider Lakeshore Reserves.
A 3 BR Grande Vista unit is a great trader- use the entire 3BR when you want those very hard to make trades, and lock-off the rest of the time, either using the larger unit and trading the studio for those Orlando trips, or trading both sides. It would be a relatively inexpensive entry point into the system.
That said, Marco units are sparse in II, so if that's where you want to go, then you may need to go the DC points route. If you post when you're looking to routinely go, hopefully others will indicate what the availability generally is using points for those timeframes. Booking a November week using points is far different than looking for a school vacation week. Despite what the salespeople tell you, it won't be easy to book a week 7, 51 or 52, for example, and will cost a lot of points to boot. Make sure you fully understand the system before you buy anything.
Good luck, and welcome to Tug
. Feel free to ask questions- most of us were newbies once, and we all learnt from each other. Most of us love our ownerships, and find it's an amazing way to travel with family and friends, and despite some of the annoyances, most of us would do it again. Just take the time to really understand what it's all about and your many different options, so you can make an informed decision as to what will suit your family's needs now, in five years and in ten years, since family dynamics change as children grow (and then re-shift once life's little dividends appear- AKA grandkids
).