, unfortunately I know nothing about N1.
Read here about subclades:https://en.wikipedia.org/wiki/Subclade
I suppose that most precise result you could reach is the terminal SNP of your subclade. The most further known terminal SNP (I write further known, because the terminals SNPs are found every day) could be predicted sometimes from STR markers (which you have already). Especially if you have many Y-DNA matches.
And...I think the name of your subclade isn't much useful if you don't know what to do with it next. It's only known that you will definitely help to researchers to collect your subclade and to find new SNP's.
I see (google) you joined few FTDNA projects and they said that you are N-M232. Usually administrators of FTDNA groups can predict your terminal SNP or give some advice about your next steps to gain more precise results (it could be something like "get more STR markers
", "buy SNP-pack for your haplogroup
" or "need BigY
"). Maybe you need to join an project where you would be adviced better. Try another FTDNA project for N1c1 and ask an advice from administrators.
I assume that your subglade is too rare to predict now and you really need BigY test to gain more info. Yurgan
) adviced it in another topic. I suppose you can trust his judjment.
) adviced you to join "N North Eurasia" project in FTDNA and to buy "N-SNP Pack" (119$) or BigY test as the best solution.