125 or 150 N2O shot? NOS/N2O Express?

I'm in somewhat of a dilemna...I'd like to get into the low 11's or even high 10's on slicks . A blower appears to be a few years off, but my need for speed can't wait that long. What n20 dry kit should I get.....possibly something that I don't have to get out and shut the car off the open he bottle (I'm a lazy SOB) and something that's not easily seen. Am I asking too much?

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'90 LX 5.0; 12K original miles (no sh*&); 3.55 gears; pulleys;Edelbrock Performer Heads; BBK shorties; MSD 6AL box w/ blaster 2 coil; Motorsport E303 cam; Pro-M 75mm MAF; BBK 70mm TB; Eibach spring kit; Southside welded subs; K&N cone filter charger; Hurst shifter; fiberglass turbo hood; A/C-less; rear seat-less; cat-less; 2 chamber Flos; Corbeau racing seats (fronts);
30# injectors; JMS Chip; 190 lb fp; TFS track heat Intake (12.299 @ 113)