North biggest difference between H Summer and Ton’s is that H summer has whole mustard seeds where Ton’s has ground mustard seeds. Either would be great but I’d probably go with H Summer, it is a best seller and with good reason!
For Breakfast links adding pure maple syrup is a better idea, I don’t have good luck with adding bacon,m gets mooshie (sp?) whenever I try to use it.
Regular hot dog seasoning (or closest we have) that gets great reviews Hot dog & Bologna then there is the Reduced Salt Frank & Weiner or the Chili dog is really good to but out of those I think the Hot Dog & Bologna will be the closest to what you are looking for.
For summer you can absolutely use the H or the Ton’s as a base, people do it all the time with good results. The gigawatt will give you a nice amount of heat but it shouldn’t be burn your mouth hot. I like to add ghost pepper hi-temp cheese to it so people sweat when they eat too much, it keeps people from treating them as “samples”!
For the salt the breakfast with probably the least salty taste would be the maple, so you are good there. I might stay clear of the Italians as I seem to remember them being salty but I love salt so it is hard to say for sure. For hotdogs, they are all going to have about the same saltiness aside the reduced salt frank and Weiner (linked above).
On your last bit, you said “mix spices with seasoning” did you mean with the meat? If so never mix the seasoning and cures in and then hold before stuffing, if you are using sure cure (or any cure really) then mix, stuff and then hold if necessary. If you wait then everything might start to “set” and you could break your stuffer, not to mention it will be much much harder to crank. If you aren’t using cure then just stuff, if you are using sure cure (and no accelerator) the stuff and hold in a fridge overnight to allow the cure time to work!