Dont worry about HHT. HHT is a test used when honing and only after you have honed enough razors to "calibrate" the test.
I would avoid this. From what I can tell you are novice to Straights. It is very hard to hone a razor when you dont have a good baseline to go off or a good understanding of shave ready.
I would not bother with honing until you have mastered stropping and shaving. And then i would purchase a second straight, that way you have a "Known Good" to compare too.
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i do have a norton combo stone 4000/8000 which i could (sharp intake of breath from everyone :)) give it a quick go on the 8000 using the new info i have at my disposal.