Thanks guys, some great advice.

My concerns are that I won't be able to actually sleep for fear of rolling onto the baby, or them wriggling under covers or into pillows. This is why I am thinking side car is the best choice for me.

I have looked at the Arms reach mini as am concerned that navigating in and out of bed around a full size cot will be tough (it's likely I'll need another CS so want to be prepared this time). The Arms Reach mini does seem pricey though considering the short time it's used and considering that I already have a cot....

That's why I thought it best to seek advice from those who know more.