[Newbie to DIY e juice]

Thanks for the info on the nicotine amount to use.  The online info was confusing. 

I am cool with unflavored.  At least for now anyway. 

The RO water I have is Reverse Osmosis.  The tap water goes thru 6 filters.  Removes all impurities.  But then it does go thru a filer that adds back in trace minerals.  And lastly an alkaline filter.  So it pure H2O with trace minerals and high alkaline 8-9 (instead of 7, which most water is). 

Do you have a problem with your coils or having to replace often bc of the high VG content?

[Newbie to DIY e juice]

Hi :))       I'm new here.  I have been vaping disposable ecigs that ship from south central FL, needless to say it was some time before they could fill orders (Irma was a b*tch.  I'm in NE FL, and glad I didn't get hit worse than I did.   That was a scary storm btw).  .....  back to topic,     So I stopped at my local vape shop and purchased a pen.  I'm happy about making this switch. I like knowing what's in the juice I'm vaping vs a made in China disposable),  and happy about being more earth friendly too!  Win.Win.   

I want to mix 100% VG e juice w/ 10mg nicotine / no flavor...  please check my recipe to make sure I have this right.

1 mL nicotine (from 100mg nicotine in VG base)

9 mL distilled water    *has anyone tried using RO water instead of distilled?  Should I increase the amount of water?*

90 mL VG

= 100 mL unflavored vape juice with 1.0% or 10mg of nicotine

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right now I have the Endura T18 / complete vaping system, and I'm vaping flavorless 50/50.  and this works well.  but I want to eliminate the PG bc I think I have a sensitivity to it. 

I understand that 100 VG is killer on the coil.  *Can you recommend a complete system that is simple and easy to use, charge, and vape that would handle the 100% VG?*

TIA!  have a wonderful day!