If price is the primary consideration, then I would suggest purchasing the Level 1 plan and just adding the required extras, it will still be cheaper than the Strictly Business plan.
The Level 1 'Crazy Domain Insane' plan is $7.95/month, when pre-paid for 2 years, the unique IP address costs $3.95/month and the SSL certificate would probably cost around $125/year, for a total of $535.60 for the two years, still a lot less than the $1534.80 cost of the Strictly Business plan for the same period.
Of-course, the Strictly Business plan does include some things that are not available with the Level 1 plan, such as 5 support callbacks/month, VPN acceess and Miva Merchant etc. Only you can decide whether these extras are worth the extra cost.
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