NITROUS OXIDE ( nos / n2o ) advice forum

Hi all , new to the forum and to nitrous been thinking on and off for a while about fitting a won system to my drag beetle
Got a bit click happy recently and now have a used won "kit" sitting in my workshop
Not a full kit but price was reasonable and I can add to it as necc, looks like quite an old kit and I plan to send the solenoids for servicing and as there's only 2 injectors will probably buy 4 new ones
What else should I be thinking about getting...I've seen the flat four kits with 2 pairs of solenoids but they are a bit out of my budget at the moment, may be I will upgrade at a later date....will I need to use another fuel regulator? Will one of the max controllers be advisable

The car is approx 200hp at the wheels, race only and usually runs low 12s and has dipped into the high 11 a couple of times, I'm hopping to run mid to low 11s with nitrous
Some pics of what I have


Any advice gratefully received

Thanks for the info, i'm certain I'll be asking lots more questions.
Heres a pic of my set up...holley pump and reg


Engine in bits atm for a freshen up before the season starts

For a controller i think I'd be looking for progressive launch and safety features if i miss a gear at the minimum not sure if the minimax covers both of these these ??

From what I've read if i add 25 to 50 hp i won't need to retard timing...is this correct?

Thanks again

Thanks...going to stick with 1 pair of solenoids for now and get used to the system then if/when i want to go over 50hp I'll upgrade
Solenoids are on there way to WON for servicing and Max Extreme is on the shopping list