Warrants are suitable for later stage financings, not seed stage financing. One reason is that it makes the accounting and subsequent investment rounds more complex. Later investors won't be happy with the warrants because if the value of the company is driven up, the warrant holder gets a bigger allocation of proceeds during a liquidation event. There is a natural tension between the size of investment an investor will make versus the dilutive effect the investor will tolerate. Its therefore best practice to maintain a separate stock option pool for management and employees which is managed and topped up as each financing is made. Advisors would take say a 0.5% stake from the option pool typically.
In the seed round, I would expect 10 - 15% range taken by investors. Your target raise sounds high also. Depends on the business.
Another thing puzzles me is that you are incentivising to raise more money whereas the better long term strategy is to raise the minimum you need for the runway to get to the next milestone because then you get money on better terms.
I am not your financial nor legal advisor, so you are not able to use these comments as actual investment or legal advice.
There are some finance gurus on this site. I'd be interested in their comments.