Financing options for companies with declining earnings

I'm looking at a company with a strong history, but burnt out owner. With the stable revenue, I believe there is opportunity for increased profitability/earnings. Due to the recent declining earnings, trying to decide if this opportunity is worth using bank financing or if I should approach the buyer with seller financing for a variety of reasons. Any thoughts or suggestions regarding financing and/or valuation?
'20 "21 "22 "23
Revenue: $9.1M $8.9M $10.6M $9.9M
COGS: $6.2M $6.2M $7.7M $7.2M
NET INC: $390K $315K $200K $120K
EBITDA: $565K $465K $350K $260K

'20 '21 '22 '23
AR: $1.25M $950K $810K $810K
INV: $275K $500K $600K $360K
EQUIP: $1.2M $1.25M $1.3M $1.3M
AP: $110K $195K $195K $110K
ACCR'D: $505K $485K $580K $500K