You will want to change a few things, but other wise that will work. You will need three separate buttons, and you will need to leave the cmd value as _xclick-subscriptions, and you need to have the values for the subscription terms upper case.
<form name="plan1" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick-subscriptions">
<input type="hidden" name="business" value="support@">
<input type="hidden" name="item_name" value="Business1">
<input type="hidden" name="item_number" value="Plan1">
<input type="hidden" name="a1" value="695.00">
<input type="hidden" name="p1" value="1">
<input type="hidden" name="t1" value="M">
<input type="hidden" name="a3" value="295.00">
<input type="hidden" name="p3" value="1">
<input type="hidden" name="t3" value="Y">
<input type="hidden" name="src" value="1">
<input type="hidden" name="sra" value="1">
<input type="image" src="https://www.paypal.com/images/x-click-but20.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!" width="62" height="31">
</form>
<form name="plan2" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick-subscriptions">
<input type="hidden" name="business" value="support@">
<input type="hidden" name="item_name" value="Business2">
<input type="hidden" name="item_number" value="Plan2">
<input type="hidden" name="a1" value="295.00">
<input type="hidden" name="p1" value="1">
<input type="hidden" name="t1" value="M">
<input type="hidden" name="a2" value="220.00">
<input type="hidden" name="p2" value="2">
<input type="hidden" name="t2" value="M">
<input type="hidden" name="a3" value="695.00">
<input type="hidden" name="p3" value="1">
<input type="hidden" name="t3" value="Y">
<input type="hidden" name="src" value="1">
<input type="hidden" name="sra" value="1">
<input type="image" src="https://www.paypal.com/images/x-click-but20.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!" width="62" height="31">
</form>
<form name="plan3" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick-subscriptions">
<input type="hidden" name="business" value="support@">
<input type="hidden" name="item_name" value="Business3">
<input type="hidden" name="item_number" value="Plan3">
<input type="hidden" name="a1" value="295.00">
<input type="hidden" name="p1" value="1">
<input type="hidden" name="t1" value="M">
<input type="hidden" name="a2" value="45.00">
<input type="hidden" name="p2" value="11">
<input type="hidden" name="t2" value="M">
<input type="hidden" name="a3" value="695.00">
<input type="hidden" name="p3" value="1">
<input type="hidden" name="t3" value="Y">
<input type="hidden" name="src" value="1">
<input type="hidden" name="sra" value="1">
<input type="image" src="https://www.paypal.com/images/x-click-but20.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!" width="62" height="31">
</form>
Stephen Ivaskevicius
PayPal/eBay, Inc.
www.paypal.com/pdn