I do not know what class of oval racing you are planning to use this car for...
You may want to change the angle of the front lower A-Arms. You can not run more than 6 degrees of either anti-dive or kick up. For competitive racing, you want a few degrees of anti-dive in the RF and the reverse in the LF. This will help the car through the turns. You want the LF to work as hard as possible to carry the car through the turns.
Lower spring rates on the RF and higher on the LF. This will help with the load transfer. Remember that all loads are transfered through the tires to the springs, and to the chassis.
This type of racing develops very high G-Forces (even higher if racing on carpet) and you will need very stiff springs to keep the front end planted and to avoid excessive chassis roll.
For OVAL racing, 1.5 degrees of chassis roll is about the MAX. Consider using anti-roll bars to achieve the right susspension balance. The right balance between the CG, roll center, springs, and A -Arm length are critical.
The way off-road chassis are designed, the front andrear A-arm hinge pins are way too close and this will cause higher chassis roll. If you can spread the rear a-arms further apart the car will handle much better.
I have not seen where the roll centers will be at, but that is critical for oval racing. You also need to remember that the car needs to be very low to the ground and you want to keep the CG as low as possible.
The way the suspenssion is set up (angle of the arms) the car migh squat whil going into a turn and then change drasticaly as you progress through it.
You may want to use smaller shocks, like the TAMIYA. These are GREAT shocks. You will not need more than 0.080" of suspension travel, thus you can save some weight by using smaller shocks. This will also help you with the springs and handling. Long springs like the ones you have on thecar do not work for this type of racing.
Your shock tower needs to be redesigned too. If you go to lower shocks it will help and you can reposition the camber link position. This is very important.
Also, with the existing shocks/tower combination you are using, no oval body will fit.
IMO, the front A-ARMS are too long for oval racing...but you never know...
This might work for you and I wish you the best.
Being that the motor is mounted behind the axles, you will need to work on your weight distribution to keep the rear end from sliding out on you.
I took another lok at the pictures of your project and I noticed that you have excessive front caster. You want to keep the front caster below 6* and it looks like you have 20*+ This will not work for oval racing (even dirt)
Ihave seen over the years many attempts at getting this combination to work, and to be successful you will need to make manychanges and adjustments.
Have you thought of reversing the motor/tranny. The car will track better if you mount the motor in front of the tranny.
BTw, what are you estimating the weigh distribution to be at? F/R and croos weight. This is very important.
What kind of tires do you plan to race with because this is critical in suspension geometry design. Are you going to use foam tires? This create completely different problems due to the tire/weel characteristics.
I am not being critical at all, I am just passing information to you. I do design work for a living as a PE and I do have extensive experience in chassis and suspension geometry design.
GOOD LUCK, I'M glad to see people developing new cars.
I wish you the best and keep us posted on your results.