Starting Out in Karting Seattle WA Area

Can some one help me out, for I am and my family are newbies to Kart Racing, we know very little about class and engine structure for my area the greater Seattle area. I understabd that miss takes I make will be amplified exponentially; therefore, making it an imparative to be on point.

The discussion here speaks to engine sizes, types, ext., That each area presents. What are some paramiteres I must be in compliance to race road races and maybe Sprint down range. I have the following ages involved, 23 year old Son, Joshua, 17 year old Grandson, Xavier, 14 year old Granddaughter Lailah, 11 year old family, Jonas, will be doing competitive racing. My Wife

Constance, and myself will be running practice track time for fun and after I am in shape to compete I will. Three generations of one family entering Kart racing to compete competent ly requires more knowledge then I have. I really need the knowledge of types of engines,

We need to be focusing on and how much modifications can you make. I am concerned about financing a family adventure like this, however, anything you put your life on the line for, must be taken seriously and use only quality top performance parts and equipment that has the best safety features out their, i.e., proper racing gear, helmits, suits, gloves, etc.

Now the costs starts to increase big time. So, I can not afford to make mistakes because I am taking Karting very serious and will not let my family on the track with less then the best out there. I owe that to them because it just may be, because we used high quality products we have midigated injuries greatly?

Sorry this is so long, I just needed you to have a better understanding of my situation to formulate a more percise plan? Thanks and Good luck to all of you this weekend of racing and a special Shout Out to DavinRS and AaronS., :checkered_flag:
:revolving_hearts::orthodox_cross::dove:©:cowboy_hat_face:Scout​:checkered_flag::spades: @Maestro