You like the idea of a symmetrical ski, and you want to play outside of the park as well. This is your first setup, but you have skied for a while, so I bet you aren't too good by now, but good enough to justify getting a quality setup. With these factors known, I can formulate the following response.
Get last years Line Anthems in size 178. They are exactly what you want in a ski; symmetrical park ski that that you can have fun with outside of the park. You are pretty giant, and with 8-ish years of experience you will be able to handle a 'long' ski, especially because it is a light, soft, center mounted ski. Why last years model? This is your first setup, so it is good to be cheap about it. Once you get into the sport full-on, then you can worry about buying the latest and greatest. Easily under $300 shipped.
Bindings. I can only recommend PX 12 Jib bindings. They are light, well made bindings, and the design has been around for a good number of years. Look, Dynastar, and Rossignol all produce variants of the PX 12 Jib, and to my knowledge, nothing is different between brands, just colors and such. Don't be afraid to go a few years back to save some cash, you will get the same preformance no matter what the year. ~$100
Boots. I will give you the NS cookie-cutter answer. Go to a bootfitter. The corners you cut by looking at older skis/bindings will let you choose the right boot for you. Go to a shop that has a good variety of boots, look out for brands like Dalbello, Salomon, and Full Tilt. If you want to cheap out (and possibly go to hell) you can go to a store, get fitted, walk out, and buy the boot online.
A good horror story is one of my own. I was inexperienced with boots, so I just went with the majority of NS at the time and bought SpK's, one of the hottest boots out at the time. I googled a size converter and translated my street shoe size into a 28 on the mondo scale. I wore these bots for 2 seasons, with good results. They were comfy, warm, waterproof, stylish, and they preformed well. I did notice though, that I could really move around in them, and it was obvious that these boots were wrong for me when I skied really hard on tough terrain. At the end of this year, I went into the boot shop at my hill. I was happy to see their selection of full tilts. I had a fitting session, and I am perfectly fitted for a size 26.5 full tilt boot. I could not be more off with my assumption, I was riding in boots meant for wide feet, in a size much too big for me.
I hope you are happy with whatever you buy, and I hope you take the time to read what I said.
But When I Came Back,
They Didn't Have No Grapes!