You will not be at a disadvantage wanting to go into marketing. You need to be honest with yourself, so you can have a convince story to tell the AdCom. If b-school is 2 years out, and you like marketing, I would advise you to apply for some marketing jobs, to see if you like it. Although, be careful about the company and role you choose. Based on your post, I think you should go for a marketing role at a durable goods company. Marketing at CPG is very short term and number focused. If one thing doesn’t work, they can quickly change the attribute to test the market or price elasticity. I think the durable goods companies have a much stronger strategic plan for their product pipeline, because they have to forecast and plan out the product 5-10 years down the line.
One thing I would advise you not to do is to apply as a finance applicant. For one, your passion will not be there, and people can tell. For two, at the top tier finance school, admits have investment banking, hedge fund, asset management, PE/VC experience, not corporate finance. For job recruiting, they can leverage their background to go back to those more “prestigious” finance jobs. Lastly, if you end up at a school that is highly ranked but not strong in marketing, the recruiting in marketing may not be good.