camp amp SMPS in chassis close to PCBAs. potential issues?

Hi, i building this kit from Aliexpress.
im repurposing the heatsinks from an Onkio amp I salvaged for parts.
made some modification with:
1. added foil capacitors parallel to the original electrolytic once.
2. bypassed the power supply diode with a short.

i wanted to cramp it all in a reasonable small enclosure. but common sense indicates EMI RFI potential interference.
what do you think? i guess i can try it before i cut the rear panel with CNC. if the SMPS will stay out i will make the enclosure smaller.
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link to photos