How can I write an rss feed from prewritten content and drip it daily.

Question

1.i have a mass of content. 2.I want to drip that content piece by piece via a feed. 3.it needs to be updated daily and at a specific time (8 am)

heres some sample code im working on:

<channel>
<title>my title</title>
<skipHours>
<hour>0</hour>
     <hour>1</hour>
     <hour>2</hour>
     <hour>3</hour>
     <hour>4</hour>
     <hour>5</hour>
     <hour>6</hour>
     <hour>7</hour>
     <hour>9</hour>
     <hour>10</hour>
     <hour>11</hour>
     <hour>12</hour>
     <hour>13</hour>
     <hour>14</hour>
     <hour>15</hour>
     <hour>16</hour>
     <hour>17</hour>
     <hour>18</hour>
     <hour>19</hour>
     <hour>20</hour>
     <hour>21</hour>
     <hour>22</hour>
     <hour>23</hour>
<!-- The above tells the reader to not pull the feed but only in the 8th hour. -->
</skipHours>
<atom:link href="http://www.url.com/tips.xml" rel="self" type="application/rss+xml" />
<link>http://www.thewebsite.com&lt;/link&gt;
<description>the description</description>
<language>en</language>
<sy:updatePeriod>daily</sy:updatePeriod>
<sy:updateFrequency>1</sy:updateFrequency>
<sy:updateBase>2010-07-24T08:00:00-04:00</sy:updateBase>
<!-- The above should be changed to the current date. but do not change the time.  If all goes well -->
<!-- this should tell the feed reader that 8 oclock is the update time. I've used 3 different methods. -->
    <copyright>2010 </copyright>
    <managingEditor></managingEditor>
    <webMaster></webMaster>
    <category>posts</category>
    <ttl>1380</ttl>
<!-- The above hints to the reader to cache the feed for only 23 hours. -->
    <item>
    <title>Tip 1</title>
    <link>http://www.thewebsite.com&lt;/link&gt;
    <description>The right tip.</description>
    </item>

1. i dont need any more content then what is above.
2. i just need to know what i have to do to make 1 tip update each day at 8 am.
3. this is my 1st time coding rss/xml. i just began looking at it 4.5 hours ago.
4. if i understand correctly. the reader will pull ALL items in the channel as 1 feed update.
5. i have over 300 tips that i need to feed, INDIVIDUALLY, each day at 8 am for over 300 days consecutively.
6. in lieu of creating over 300 individual feeds. how can i do this in 1 single xml file?