Enjoying our Bespoke004 but help needed with sofabed

Hi guys,
First of all i wanted to let you know that we have been really happy with our Artisan Bespoke004 for the last 3years ... Perfect!
With our baby coming up we will probably spend countless nights in the second bedroom where we just have an Ikea sofa bed (top of the range "Havet"), but i find that very very uncomfortable!
I am thinking if adding a topper (euroking).. but on the cheap end of the market... Would you have any suggestions?
Thanks in advance!
Guillaume