Should I do it myself?
This comes down to your comfort level. The downside to having professionals do your taxes is that they may not be fully conversant with disability topics and autism in particular. You have been dealing with the issues from day one and should be aware of what you can claim.
The tax forms read like gooblygoop to me
I agree. No mortal human should have to understand the obscure language of bureaucrats. For me the answer is Quicktax or Ufile. Depending on which software program you purchase, you may be able to cut costs by sharing it with friends and family.
All that is required is the awareness of what you are going to claim and where you are going to claim it. Hopefully you have been following the suggestions on this website, so your paperwork is clear and concise.
The Disability Amount
The first thing to claim is the "Disability Amount transferred from a dependant". This of course is assuming you have submitted the T2201 to claim the disability tax credit. You will make this claim on both the "Federal Tax Schedule 1" and the "British Columbia Tax BC428".
Child Care
The next item to claim is child care costs if you were both working or are a single parent household. Firstly claim true child care fees, a nanny or babysitting (with proper receipts).
If you don't have any of the above, use the ABA receipts to a maximum of $10,000.
Attendant Care
For the case of one parent not working (two parent household), you may not claim for child care costs, however if you have employed a nanny or had a babysitting service, you should be able to claim attendant care costs. Don't use ABA receipts for this purpose.
Medical expenses
The spouse with the lower income should generally be the one to claim for medical expenses. The only exception is when that spouse doesn't have enough income to use the non-refundable tax credits.
Fitness tax credit
Assuming that you have at least $100 in fitness receipts, you can add $500 to the amount claimed on your tax form.