The 8FG Super should be a great step up for you (it actually has 14 channel capability).
Tower has an offer running right now, of including a second rcv for FREE, until Oct 31.

I'd go with the DLE30 over the OS GT33

Those Sullivan nyrods will be fine, but do NOT use the included metal clevis on any throttle setup.
Use ball links as shown in my photo.

You'll also need to create a brace somewhere about mid-way, for the nyrod.
With a long run of nyrod, it may very well flex too much giving some undesirable results, unless braced.