cplinker, that wheeze is from smoking. It will eventually fade. I suggest you eat plenty of veggies and fruits, especially rich in Vitamin C and do long walks as they help to clear the lungs.
You can also do a couple of runs if you feel up for it.
With vaporizing, you will be good in no time.
About the vape, the Solo is a good option although in the begining i would keep it bellow temperature 7 to avoid the harsher hits... and be sure to buy a water bong to filter the vapor.
About the long hits, i think it is best to keep it as short as you feel confortable, if you can go longer you'll get thicker hits.
Plus, THC has a bronchodilator effect, so you will cough a lung more likely know than when you smoked. That is expected.. it will also subside as your lungs heal from combustion.