I can confirm that the Festool 36mm house fits over the new style locking dust port on the TS saws. Two options for dust collection you may not have considered are using the dust bag, which works very well as long as you empty it regularly and purchasing a Festool hose for use between your dust extractor and track saw.
The Panther blade is good for efficient ripping, and the quality of cut will be dependent on the species of wood and thickness you are cutting. If you are ripping thinner solid wood (say, under 1" or 1-1/4"), you will probably get better results with the Universal blade.
In case you're not aware, Festool sets minimum sell prices in North America, so you're not likely to find a better price on Festool products by shopping around.