Yes to both!!! If nothing else,the neck brace helps support the extra weight of your helmet....It makes a big difference wether you crash or not....Don't get the type that fastens to the shoulder belts,but get a neck doughnut....Much more comfortable and easier to deal with...
Get some wrist restraints asap....When you roll,the first human instinct a person has is to stick their arm out like they think they can stop the roll,and snap.....Broken arm......Also,if you do flip it,even if you don't stick your arm out,there's a good chance the impact will knock your hands from the wheel,and they will be flopping around hitting everything within reach...
Hoodlum